84%
The percent composition of Carbon in heptane (C7H16) is 84 percent. This can be calculated by dividing the total number of Carbon atoms in the molecule by the total number of atoms and then multiplying by 100 to get the percentage.
The percent composition of C5H12 is: carbon (C) = 83.78%, hydrogen (H) = 16.22%.
The molar mass of C7H16 (heptane) is approximately 100.2 g/mol, while the molar mass of CaCO3 (calcium carbonate) is approximately 100.1 g/mol. Both compounds have about the same molar mass in grams, but they differ in their composition; C7H16 contains only carbon and hydrogen, while CaCO3 contains calcium, carbon, and oxygen. Therefore, they do not contain approximately the same number of cations, anions, or carbon atoms.
Cocaine is composed of carbon, hydrogen, and nitrogen. The approximate percent composition of cocaine is around 71.04% carbon, 8.64% hydrogen, and 20.32% nitrogen.
To determine the percent composition of carbon in beryllium cyanide, first find the molar mass of beryllium cyanide, then calculate the molar mass contributed by carbon. Finally, divide the molar mass of carbon by the total molar mass of beryllium cyanide and multiply by 100 to get the percent composition.
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Carbon disulfide (CS2) is composed of one carbon atom and two sulfur atoms. To calculate the percent composition, divide the mass of each element by the molar mass of CS2, then multiply by 100 to get the percentage. The percent composition of CS2 is approximately 45.7% carbon and 54.3% sulfur.
The percent composition of a compound with the empirical formula CO2 is 27.3% carbon and 72.7% oxygen.
To find the percent composition of carbon in carbon monoxide (CO), we first determine the molar mass of CO. Carbon has a molar mass of approximately 12.01 g/mol, and oxygen has a molar mass of about 16.00 g/mol, giving CO a total molar mass of 28.01 g/mol. The percent composition of carbon is calculated as (molar mass of carbon / molar mass of CO) × 100%, which results in (12.01 g/mol / 28.01 g/mol) × 100% ≈ 42.8%. Thus, the percent composition of carbon in carbon monoxide is approximately 42.8%.
The correct molecular formula for C7H16 is heptane, which is a straight-chain alkane hydrocarbon with seven carbon atoms and sixteen hydrogen atoms.
The percent composition by element of Ca(C2H3O2)2 is calcium 25.339%, hydrogen 3.824%, carbon 30.375%, and oxygen 40.462%.
The percent composition of cysteine (C3H7NO2S) is: - C: 29,75 % - O: 26,43 % - H: 5,83 % - N: 11,57 % - S: 26,42 %